Improvement in rotary engines



1. c. wldLsoN. Improvement gnlotary Engines.

Patfantpdlnne 11,1872.

Il. Il -UMOMHIf @l l E "MMIII, PINI,

J. C. WILSON.

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Improvement in. -Rotary-Engines.

Patented .lune11, 1872T ZZ WM,

4H. Hmm -llrlloaMPu/c ca /l.v./ 08500115: .fl/100585] 3sh` .t --sh 3. J. @.wusoN. Y s e Improvement in Rotary-Engines. N0 127,943

l. Patented June11,1872;

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PATENT OFFICE.

NORBIB, OF SAME PLACE IMPROVEMENT IN RoTARvsNelNEs.

Specilication forming part of Letters Patent No. 127,943, dated June 1l, 1872.

I, Jenn OnnnLEs Winsor, of London, Eng land, have invented an Improved Rotary Enine, of which the following is a specifica Myinvention relates to a revolving or rotary engine, which will serve also as a pump or a liquid-meter.

Description of the Draw/mg.

a.Y rotary engine. Fig. 9 is a transverse section on'the line y y Fig. 8. Fig.. 10 is a side elevation of Fig. Fig. 11 is a transverse sec tion on the line z a of Fig. 10.

In revolving engines and pum ps with a concentric internal revolving cylinder or piston,

there is a part of the external fixed cylinder which is eccentric to the internal revolving cylinder and touches it at a. certain point. This part, which is called the large cam, acts as a 'base to the propelling power, and serves to stop the connection between the exhaust: *andthe pressure sides of the engineer pump.

This large cam I construct in one solid piece with my external fixed cylinder, for the fol,- lowing reasons: First, I thereby insure the 'equal expansion and contraction of the' metal of this cam with that of the external cylinder,

which is of importance in these engines, as

they are iittedmetal to metal, and any unequal expansion or contraction of their parts must cause either leakage or friction, and thus detract from the eniciency of the machine. Second, I avoid the expense of itting in, which 1s considerable. I bore out or otherwise form the worling surface f this large cam. at the same time as that of the external -iixed cylinder, of which it forms a part.

A is the large cam. (See especiallyligal and 2.) I construct .the ports for the ingress or. egress of the steam, water, or other uid tol :extend nearly the whole length across the ex l teruel xed cylinder, and as narrow as posst ble in the other direction giving an area. of a little more .than that of t e annular space lie-' tween theY external fixedoylinder and the internal revolving cylinder or piston. My reason for adopting this mode of construction, instead of making the ports wide and cutting away a large portion of the large cam A., is that I avoid that unequal wear of the outer edges of the pistonslides D, Fig. 1, which takes place when there is a large space cut out of the ex ternal fixed cylinder in the direction of their motion. 0 is the internal revolving cylinder onpston; B, the external fixed cylinder; and E, the annular space between them. As the large cam A is eccentric to the revolving pis ton O, it will be observed that the piston-slides D travel outward and inward through the space E as they pass over the surface of the said cam A.. It is desirable while theyare so travelin that the pressureand exhaust should be equa on both sides of them to avoid friction, which would result from pressure on either side of the grooves in which they work. To accomplish this object I construct recesses or proj ections f in the cover or covers of my external fixed cylinder, at the end or ends of the said pistonslides, which recesses allow the steam, water, orother. iluid in a state of pressure or exhaust to. pass around the end or ends of the said pistoiigslides, and so render equal the pressure onllioth sidesof them. f f, Fig. 3,

are the.said:recesses.` Another advantage of this mode of construction is that as the piston-slides have no pressure outwardat their ends they are not .worn unequally by my reat these parts.

.I guide the piston-slides D in their motion outward and inward by-two small cams-one attached to each cover of the external xed cylinder. I thereb insure awide base and steady motion for t e piston-slides, combined with a lar' e wearing surface, and one which is easily oile G G are these small cams.' Instead of these cams, springs to press the pistonslides outward may be used; Vbut I prefer Vthe cams, as beingimore certain and steadyin their action: a

I construct the pistou-slides D inthe fo1lowing improved manner Instead of making them with the 'whole of their'surfaces on eechjside 'and attached to e float, which rises or falls (and opens or shuts the valve) along with the wafter in the cistern or boiler which is being sup'- from the main-shaft, and :are connected with pointers on the face of an index or indexes, itbecomes an ecient duid-meter.

These engines may be driven either` by steam, water-power, or hot-air, or-may be em ployed to pumpair or gas as well as water,

and may be either exhausting or compressing.v

Claims. `1. The pistonslide D v'provided with grooves d', substantially as and'for the purpose setv Orth. v ,v

u 2. The cylindersB1 B of different sizes, and their pistons'aiidl slide-valves, arranged substantielly'es end for the purpose set forth.

3. The combination of vthe inner-revolving cylinder() with the cams G Grand recesses f `f inthe heads, substantially as and for the vpurpose specified.

JOHN (LWILSON. Witnesses: 'i y 'EDWARD C. JACKSON,

W'.v W. WYNN, 24 Royal Exchange. 

